I suspect the dressing room is intended to serve as a second children's room if necessary?
What strikes me spontaneously without dimensions:
The kitchen would be significantly too narrow for me, it could feel cramped. Due to the windows, you also have little space in the kitchen for tall appliances. The refrigerator usually needs a tall cabinet. Dishwasher and oven are also convenient when installed at a height, but it’s not a must. Generally, however, narrow and cramped. When you open the dishwasher to unload, you’d already be bumping your behind against the wall, right?
The garage, with the stairs, already looks in the sketch as if the car barely fits?
Storage space with two children will be tight. As long as you have a huge dressing room, it should work (assuming you want to store all sorts of stuff in the dressing room).
I also miss a cloakroom in the hallway (which is generally rather narrow).